docs: def delete_all_events(self, calendar_ids=()):
          """Deletes all events managed through Cronofy from the all of the user's calendars.
  
          :param tuple calendar_ids: List of calendar ids to delete events for. (Optional. Default empty tuple)
          """
          params = {'delete_all': True}
          if calendar_ids:
              params = {'calendar_ids[]': calendar_ids}
  
          self.request_handler.delete(endpoint='events', params=params)